IBM SpotLine M110 - Manual (Page 45)

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5.0 Cabling
As a LAN terminal, please follow all the worldwide standards for 10BaseT
cabling. Ensure that hubs are used when
needed for 10BaseT.
As a serial terminal, the SpotLine M110 Terminal uses industry
standard 4-wire or 6 -wire RS232C cabling. It is strongly recommended
that you use cabling appropriate for your environment to minimize
noise, errors and other interference. In particular, properly shielded and
grounded cable should be used wherever possible, and that all outdoor
cables (even for short runs), be properly enclosed in grounded, metallic
conduit.
In addition, care should be taken to not run cables adjacent to
transformers, air conditioners, refrigerators or other devices that
generate a lot of electromagnetic interference.
6.1 Terminal to Host Cabling
Pin 3 TD Transmit Data
Pin 2 RD Receive Data
Pin 5 GND Ground
Pin 4 DTR Data Terminal Ready
9 Pin Serial Server (Female) to 9 Pin Serial Port 1 or 2